In Voigt (engineering) NOTATION, the contracted 6×1 stress vector is t…

Question

In Voigt (engineering) NOTATION, the contracted 6×1 stress vector is typically ordered as:

Accepted Answer

D. {'text': '(σ_11, σ_22, σ_33, σ_23, σ_13, σ_12) — first the 3 normal, then the 3 shear stresses', 'label': 'A'}

The Voigt contraction maps 3×3 symmetric tensor to 6×1 vector. Convention: indices 1→σ_11, 2→σ_22, 3→σ_33, 4→σ_23, 5→σ_13, 6→σ_12. Allows representing C as 6×6 matrix instead of 4-rank tensor.

Answer

{'text': 'Only normal stresses, shear stress is separate', 'label': 'D'}

Answer

{'text': 'Random order', 'label': 'B'}

Answer

{'text': 'Alphabetical by index', 'label': 'C'}